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Add call ERR_clear_error() before SSL_* calls #100

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Add call ERR_clear_error() before SSL_* calls #100

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3 changes: 3 additions & 0 deletions stud.c
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Original file line number Diff line number Diff line change
Expand Up @@ -996,6 +996,7 @@ static void client_handshake(struct ev_loop *loop, ev_io *w, int revents) {
int t;
proxystate *ps = (proxystate *)w->data;

ERR_clear_error();
t = SSL_do_handshake(ps->ssl);
if (t == 1) {
end_handshake(ps);
Expand Down Expand Up @@ -1046,6 +1047,7 @@ static void ssl_read(struct ev_loop *loop, ev_io *w, int revents) {
return;
}
char * buf = ringbuffer_write_ptr(&ps->ring_ssl2clear);
ERR_clear_error();
t = SSL_read(ps->ssl, buf, RING_DATA_LEN);

/* Fix CVE-2009-3555. Disable reneg if started by client. */
Expand Down Expand Up @@ -1081,6 +1083,7 @@ static void ssl_write(struct ev_loop *loop, ev_io *w, int revents) {
proxystate *ps = (proxystate *)w->data;
assert(!ringbuffer_is_empty(&ps->ring_clear2ssl));
char * next = ringbuffer_read_next(&ps->ring_clear2ssl, &sz);
ERR_clear_error();
t = SSL_write(ps->ssl, next, sz);
if (t > 0) {
if (t == sz) {
Expand Down